Resume tips for older workers: what the callback data says, and what an ATS actually reads
The field experiment behind 'drop your graduation year', what an ATS does with your dates (we tested ours), what the EEOC really says about age questions, and how to write the last 15 years.
Nearly every guide for job seekers over 50 gives the same two instructions: show the last 10 to 15 years and remove your graduation year. We read eight of them for this article. Only one cites the experiment behind the advice, and it cites it as a discrimination statistic, not as the reason for the tip. There is a source. It is a field experiment that sent more than 40,000 resumes to real postings and used the graduation year to tell employers how old each applicant was.
This guide starts with that experiment, because it tells you which parts of the standard advice matter and which are folklore. Then it covers what an applicant tracking system actually does with your dates (we ran three versions of a 35-year resume through our own), what the law in the US really says about age questions, and how to write the recent-years resume that the data argues for.
The one experiment behind "drop your graduation year"
David Neumark, Ian Burn and Patrick Button ran the largest age-discrimination correspondence study to date, published as NBER working paper 21669. They created fictitious applicants in three age bands, 29 to 31, 49 to 51 and 64 to 66, and applied to retail sales, administrative assistant, janitor and security guard postings in cities across the United States, with job histories written to be realistic for each age. The age signal was the one most of us put on a resume without thinking:
"We convey age, on the resumes, via high school graduation year. This is common; in our sample of scraped resumes, 81% provide information on high school attendance, and of these 68% (56% of the total) include high school graduation year."
The results, from the paper's own text, for the job type with by far the most postings:
"For administrative jobs (Panel B), for which we found by far the most eligible ads (about 61% of the total), the callback rate is 14.4% for young applicants aged 29-31. It is about 29% lower for 49-51 year-old applicants (10.3%), and about 47% lower for 64-66 year-old applicants (7.6%)."
-35%
-18% for applicants aged 49 to 51
callback rate for applicants aged 64 to 66 compared with applicants aged 29 to 31, across all four occupations, with age signalled by the high school graduation year.
Source: Neumark, Burn and Button, NBER Working Paper 21669, revised 2017, over 40,000 applications
In sales, men aged 64 to 66 had a callback rate 30% lower than young men (14.7% against 20.9%). For women the gap was larger, over 10 percentage points. The authors' summary is that the evidence of discrimination is "robust" for older women and "considerably less" clear for men once they correct for the usual biases in these studies.
Two things follow for your resume. First, the graduation year is not a detail. In this study it was the whole age signal, and it moved callbacks by a third. Remove it. Second, the experiment shows the penalty landing before anyone reads a line about your skills, at the callback stage, which is the stage a resume exists for. That is the argument for writing a resume that reads current, not a resume that apologises for its length.
What an ATS actually does with your age
Seven of the eight pages we read tell you to remove the graduation year, and seven mention an applicant tracking system, but none says what the software does with a date. We can only speak for the software we wrote, so we tested it.
The HiredFolio ATS checker scores a resume against a posting on up to four components: keyword match (40%), required skills (20%), formatting (15%) and experience fit (25%). The formatting checks are exact rules, and they run only on a resume built in the HiredFolio editor, where the structure is known. On an uploaded PDF there is no structure to check, so that component is skipped and the other three are re-weighted. The rules look for an email address, a phone number, a summary, bullet points under your roles, and a word count between 150 and 1,200. Above 1,200 words the checker adds one suggestion, "Resume may be too long", worth 8 points on the formatting sub-score, which is 15% of the total, so about one point overall. None of these rules reads a date.
We built three versions of the same operations manager's resume and ran them through the keyword matcher and the formatting scorer, with no AI involved:
| Version | Words | Keywords found | Formatting |
|---|---|---|---|
| A. Every role since 1991 written out in full, B.S. 1996 | 972 | 15/15 | 100/100 |
| A2. Same as A, graduation year removed | 971 | 15/15 | 100/100 |
| B. Last 15 years in full, earlier roles in one line, no year | 394 | 15/15 | 100/100 |
Removing the year changed nothing. Cutting 578 words of pre-2010 roles, a Lotus Notes training certificate and "References available upon request" lost zero keywords. Even the full 35-year version stayed under the 1,200-word line. The reason to trim is not the software. It is the recruiter who gets the callback decision, the one the experiment above measured.
The one part of our score that could react to a long career is the experience-fit component, which an AI model judges. Its instructions ask three questions: does the seniority level match the job, is the industry experience relevant, and do role progression and titles support the target role. Age and dates are not on that list. It does read the whole resume, so a 1996 degree is visible to it, and we will not pretend otherwise. But "overqualified" is a seniority judgment, which brings us to how you write the top of the page.
Other systems work differently, and a recruiter can filter on anything they like by hand. Our guide to how ATS filters actually work covers knock-out questions, which is where a hard age cut-off would live if an employer chose to set one.
Can an employer ask how old you are?
One of the pages we read says employers cannot legally ask your birthdate or graduation year. Under US federal law that is not what the rule says. The Equal Employment Opportunity Commission's fact sheet on age discrimination states:
"The ADEA does not explicitly prohibit an employer from asking an applicant's age or date of birth."
The same page explains why such questions are a risk for the employer anyway: they "may deter older workers from applying for employment or may otherwise indicate possible intent to discriminate based on age." The Age Discrimination in Employment Act "protects applicants and employees who are 40 years of age or older", and it "generally makes it unlawful to include age preferences, limitations, or specifications in job notices or advertisements". The EEOC's own example of a bad ad, on its prohibited practices page, is one seeking "recent college graduates".
What this means in practice: an application form can ask for your graduation year, and you may have to fill it in. Your resume does not have to volunteer it. Those are different documents, and the experiment above measured the resume.
How far back to go, and how to write the rest
All eight pages we read tell you to detail only the recent years, 10 to 20 depending on the page, and the callback data gives the rule a reason: the detail of your 1990s roles adds age signal and no keywords. Write the last 15 years with bullets, results and numbers. Everything earlier gets one line with employers and titles, no dates.
Long tenure is not the problem some guides make it. The Bureau of Labor Statistics' employee tenure release of September 2026 found "the median tenure of workers ages 55 to 64 (9.6 years) was more than three times that of workers ages 25 to 34 (3.0 years)". A recruiter hiring for a role that needs someone to stay already knows which group stays. State the tenure plainly and spend the bullets on what changed while you were there.
Example the line for roles older than 15 years
Dated and padded
Logistics Coordinator, Great Lakes Freight, 2004 to 2010. Scheduled 40 loads per day, maintained the inventory ledger in AS/400, prepared monthly budget variance reports, trained new coordinators, served on the safety committee.
One line, no dates
Earlier career: logistics coordinator and warehouse team lead, Great Lakes Freight; shipping and receiving, Calumet Steel Service.
If you are deciding between one page and two, the second page is for the last 15 years only. Our guide on how long a resume should be has the thresholds.
A summary that reads current
Replace the objective statement with a three-line summary at the top. It is the first thing the recruiter reads and the part of your resume that sets the seniority level the AI component is asked to judge. Write it for the job you are applying to, not for your career. "28 years of experience" is a number about you; "P&L owner for three sites" is a number about the job.
Example a summary that names the current job, not the career length
Operations manager with P&L ownership for a 3-site, 140-person manufacturing and distribution operation. Lean and Six Sigma practitioner; led an SAP S/4HANA migration and cut inventory carrying cost 18% in two years.
Every term in that summary comes from the posting. Our guide to resume summary examples covers the structure for other roles.
What to cut, and what to swap
The dating cues and the current version of each
Signals a decade
Graduation year, or a degree dated 1996
"Seasoned professional with 30+ years of experience"
Full street address at the top
AOL or Hotmail address, no LinkedIn URL
Lotus Notes, WordPerfect, "Microsoft Office proficiency"
"References available upon request"
Reads current
Degree, school, no year
The job title you are applying for, then one result
City and state only
Gmail or Outlook address, LinkedIn URL that matches the resume
The tools in the posting: SAP S/4HANA, Power BI, Teams, the CRM they name
Nothing; the line is assumed and the space is better spent
The test for each line is the same: does it name something the posting asks for, or does it name a year?
Certifications follow the same rule. In our test resume the full version listed a 1998 Office 97 course and a 1997 Lotus Notes training; the trimmed version kept five certifications from 2011 onward and the keyword count did not move.
Format: chronological, one column, PDF or Word
Four of the eight pages we read recommend a functional or hybrid resume to make a long career "less visible". We would not. A recruiter reading a skills-first resume looks for the timeline, finds it at the bottom, and wonders why it is there. The AI component of our checker is asked whether "role progression and titles support the target role", and a functional layout hides the progression that is your strongest argument. Keep reverse-chronological order, detail the last 15 years, and collapse the rest.
One column, standard headings, no text in the page header or footer, saved as PDF unless the posting asks for Word. Our resume formatting guide has the margins and fonts. If you are moving into a different field at the same time, the career change resume guide covers how to lead with transferable skills without losing the chronology.
Returning after a break, or after retiring
A resume that restarts after a few years out follows the same structure, with one honest line for the break. The research on what a gap costs, and the exact lines to write for caregiving, health or a layoff, is in our guide to employment gaps on a resume. The short version: name it in one line, then let the last role carry the page.
If you retired and are coming back, the Neumark study included older applicants with what it calls "bridge job" profiles, people moving to a less demanding role after a career. Recent part-time work, consulting and board or volunteer roles belong in the main experience section with dates, because they close the open end of your timeline. A treasurer role with a budget and an audit is an operations bullet, not a hobby.
Where the hiring is
The occupations in the Neumark study were not chosen at random. The authors used Current Population Survey data "to identify jobs that are common and have a relatively high representation of older workers with low tenure (five years or less)": retail sales, cashiers, janitors, security guards, secretaries and administrative assistants, office clerks and receptionists. Those are the fields where employers already hire people over 60 into new jobs, which is one honest answer to "where should I apply".
The other answer is growth. The Bureau of Labor Statistics' fastest growing occupations table, 2025 to projected 2035, is a list for all ages, not a list for older workers, but several entries reward exactly the experience a long career builds:
| Occupation (BLS, 2025 to 2035) | Projected growth | Median annual wage |
|---|---|---|
| Medical and health services managers | 24.2% | $123,860 |
| Occupational health and safety specialists | 18.5% | $90,150 |
| Occupational health and safety technicians | 19.4% | $61,560 |
| Information security analysts | 21.0% | $129,180 |
| Industrial machinery mechanics | 17.8% | $64,520 |
| Home health and personal care aides | 18.1% | $35,800 |
Management, safety, compliance and maintenance roles all reward tenure and judgment. A recruiter hiring an occupational health and safety specialist is not looking for a recent graduate.
Test the resume against the posting, not against your age
Once the graduation year is gone and the last 15 years carry the page, the thing left to check is whether the resume speaks the posting's language. Paste the job description and upload your PDF in the free HiredFolio ATS checker. It lists the posting's keywords your resume contains and the ones it is missing, and the required skills it could not find. Nothing in its exact rules looks at dates, so the score you get back is about the match, which is the part you control.
Key takeaways before your next application
Delete the graduation year. In the only large field experiment on the question, it was the whole age signal and it cut callbacks by a third.
Write the last 15 years with results and numbers; give everything earlier one line with no dates. Our test lost zero keywords doing it.
Open with a summary that names the job you want and one result, not the number of years you have.
Then check the part the software measures: scan your resume against the posting and fill the keyword gaps it finds.
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